Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1c2882af4ac6981…

MALICIOUS

PDF

42.4 KB Created: 2020-08-25 23:33:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c1ae09f607619555ab71969a6ba113d6 SHA-1: 021c28ad692425aab6a974c754b303bd3598d938 SHA-256: c1c2882af4ac6981f737601e1ac29e94e7a5bede50369df6924d6194888ac93b
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector pointing to 'ttraff.com'. The document body, though partially corrupted, contains the same URL and appears to be an attempt at SEO poisoning or a lure for malicious content. The presence of numerous external PDF links further supports the SEO poisoning angle.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=roddy+ricch+feed+tha+streets+2+mp3+download
    • http://files.dtlaclean.com/uploads/1/3/0/7/130775808/29137.pdf
    • http://tebola.warwickpics.com/uploads/1/3/1/4/131406436/bojaseri-xalisejazo-tumozaf-buxozoda.pdf
    • http://files.jc-engineering-solutions.com/uploads/1/3/2/6/132682106/mixosiwe.pdf
    • https://cdn.shopify.com/s/files/1/0429/5029/5708/files/88352796336.pdf
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/91827548593.pdf
    • https://cdn.shopify.com/s/files/1/0431/1007/2481/files/tibuzadoxazodumu.pdf
    • https://cdn.shopify.com/s/files/1/0432/6106/7427/files/types_of_toxicants.pdf
    • https://cdn.shopify.com/s/files/1/0433/0776/1819/files/visobuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/3400/8987/files/30267826499.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/danedogorolulefumatexa.pdf
    • https://cdn.shopify.com/s/files/1/0432/2813/5591/files/30184788104.pdf
    • https://cdn.shopify.com/s/files/1/0441/0173/0456/files/fases_de_la_enfermedad_de_alzheimer.pdf
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/absceso_periodontal_tratamiento.pdf
    • https://cdn.shopify.com/s/files/1/0440/1525/5710/files/96559877758.pdf
    • https://cdn.shopify.com/s/files/1/0437/4944/1687/files/zoxeliwavovisuzanonin.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005435.bin
5b1dcc5e8c96fc01af5a8bf52a44f83733894afc5980127016381f68d613c50b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5435 5892 bytes
font_01_sfnt_off0000683d.bin
3ef5b55da1fb167f0a64152e4f60ec302bbdc030d4548cfed4c73ccae6521e99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x683D 15964 bytes

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